کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1197673 | 1492984 | 2012 | 9 صفحه PDF | دانلود رایگان |
This study reports the feasibility of reusing glass fibre waste resulting from the thermolysis of polyester fibreglass (PFG) to produce a glass–ceramic material. PFG was treated at 550 °C for 3 h in a 9.6 dm3 thermolytic reactor. This process yielded a solid residue (≈68 wt%), an oil (≈24 wt%) and a gas (≈8 wt%). The oil was mainly composed of aromatic (≈84%) and oxygenated compounds (≈16%) and had a fairly high gross calorific value (≈34 MJ kg−1). The major PFG degradation products were styrene, toluene, ethylbenzene, α-methyl styrene, 3-butynyl benzene, benzoic acid and 1,2-benzenedicarboxylic acid anhydride. The gas contained basically CO2 and CO; the hydrocarbon content was below 10 vol%. The higher gross calorific value of the gas was low (26 MJ Nm−3). The solid residue (97 wt% fibreglass, 3 wt% char) was converted into a glass–ceramic material. For this, a mixture consisting of 95 wt% of this solid residue and 5% Na2O was melted at 1450 °C to obtain a glass frit. A powder glass sample (<63 μm) was then sintered and crystallized at 1013 °C, leading to the formation of a glass–ceramic material composed of wollastonite and plagioclase s.s. with possible building applications.
► Thermolysis and vitrification for the treatment and valorization of a fibreglass polyester composite waste.
► Organic matter is separated by thermolysis as an oil and gas phase.
► The remaining fibreglass solid phase is converted in a wollastonite and plagioclase based glass–ceramic materials.
► The glass crystallization occurs through a surface nucleation mechanism.
Journal: Journal of Analytical and Applied Pyrolysis - Volume 93, January 2012, Pages 104–112